About Shaft Collars
Shaft collars are useful for holding and positioning components on a shaft. They can also serve as mechanical stops and stroke limiters.
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About Shaft Couplings
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Shock-Absorbing Flexible Shaft Couplings
A strip of flexible spring steel wraps around the teeth of both hubs to absorb sharp, momentary load increases that can come from motor startups, emergency braking, or sudden impact with hard objects. When the shock load hits, the strip of spring steel (known as a grid) flexes to spread out the load. After the load passes, the grid straightens back out. They're commonly found in wire drawing and cutting machines, pulverizers, and mixers. Compared to spider couplings, jaw couplings, and other flexible shaft couplings, these handle higher torque while taking up less space. All have keyed bores to work with keyed shafts, which transmit higher torque with less slippage than round shafts.
A complete coupling consists of two hubs as well as a grid and cover assembly (all sold separately). The grid and cover assembly includes a spring steel grid, aluminum cover, rubber seals, and grease for lubrication. When ordering, please choose components that have the same manufacturer series number, otherwise the grid will not fit.
Grid and Cover Assemblies | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Hubs | Misalignment Capability | Replacement Grids | Replacement Seal Kits | |||||||||||||
| O'all Lg. | OD | For Motion Type | Mfr. Series | For Shaft Dia. | Each | Parallel | Angular | Max. Speed, rpm | Max. Torque, in.-lbs. | Each | Each | Each | ||||
Black-Oxide Steel | ||||||||||||||||
For Keyed Shaft | ||||||||||||||||
| 7 1/8" | 5 19/32" | Continuous, Forward/Reverse, Start/Stop | Martin (1080T) | 2 7/8" | 0000000 | 0000000 | 0.016" | 0.25° | 3,600 | 18,150 | 00000000 | 0000000 | 00000000 | 0000000 | 00000000 | 000000 |
| Additional Grease (14 fl. oz. Grease Gun Cartridge) | 0000000 | Each | 000000 |
High-Speed Vibration-Damping Flexible Shaft Couplings
Use these gear-shaped couplings for high-speed and high-torque applications. A rubber center allows flexing so couplings can take on multiple types of misalignment while damping vibration and shock. With no metal-to-metal contact, there’s no need for lubrication. Fasten to your shafts by tightening the set screws, which bite into the shaft to hold it.
A complete coupling consists of two hubs and one center (each component sold separately).
Hubs have a keyway, except hubs for 1/4" and 3/8" shaft dia. do not have a keyway.
Centers | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Hubs | Misalignment Capability | ||||||||||||||
| O'all Lg. | OD | For Motion Type | Material | For Shaft Dia. | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Axial | Temp. Range, °F | Material | Each | ||
| 5 1/16" | 6 23/64" | Continuous | Cast Iron | 2 7/8" | 000000 | 0000000 | 3,750 | 1,800 | 0.025" | 1° | 0.125" | -30° to 275° | TPE Rubber | 0000000 | 000000 |
| 5 11/16" | 7 1/2" | Continuous | Cast Iron | 2 7/8" | 000000 | 000000 | 3,600 | 2,875 | 0.025" | 1° | 0.125" | -30° to 275° | TPE Rubber | 0000000 | 000000 |
| 7 1/8" | 8 5/8" | Continuous | Cast Iron | 2 7/8" | 000000 | 000000 | 3,600 | 4,530 | 0.032" | 1° | 0.125" | -30° to 275° | EPDM Rubber | 0000000 | 000000 |
Clamping Shaft Collars
These metal collars are stronger than plastic shaft collars. They clamp evenly around the shaft to create a strong, mar-free hold. To use, slide onto your shaft and tighten the clamping screw to secure.
Black-oxide steel collars have some corrosion resistance. Aluminum collars are lightweight and have good corrosion resistance. 303 stainless steel collars have excellent corrosion resistance. 316 stainless steel collars have excellent corrosion and chemical resistance.
Clamping Screw | ||||||
|---|---|---|---|---|---|---|
| For Shaft Dia. | OD | Wd. | Type | No. Included | Each | |
Black-Oxide 1215 Carbon Steel | ||||||
| 2 7/8" | 4 1/4" | 7/8" | Socket Head Screw | 1 | 00000000 | 000000 |
2024 Aluminum | ||||||
| 2 7/8" | 4 1/4" | 7/8" | Socket Head Screw | 1 | 0000000 | 00000 |
303 Stainless Steel  | ||||||
| 2 7/8" | 4 1/4" | 7/8" | Socket Head Screw | 1 | 00000000 | 000000 |
316 Stainless Steel | ||||||
| 2 7/8" | 4 1/4" | 7/8" | Socket Head Screw | 1 | 0000000 | 000000 |
Quick-Release Clamping Shaft Collars
Installing and removing a collar is as easy as pushing down and lifting up a clamp lever. Collars clamp evenly around the shaft to create a strong, mar-free hold. All have a clamping screw to adjust lever tension. Made of anodized aluminum, they are lightweight with good corrosion resistance.
Clamping Screw | Black Anodized 6061 Aluminum | |||||
|---|---|---|---|---|---|---|
| For Shaft Dia. | OD | Wd. | Type | No. Included | Each | |
| 2 7/8" | 4 3/4" | 3/4" | Socket Head Screw | 1 | 00000000 | 0000000 |
Set Screw Shaft Collars
Keep these shaft collars in place by tightening their set screw into the shaft. The tip of the screw digs in for a secure hold, but will mar the shaft’s surface. For maximum holding power, make sure the set screw material is harder than your shaft material. Use these shaft collars to position and retain power transmission components such as sprockets, pulleys, and bearings. You can also use them to limit the movement of a shaft.
Carbon steel collars are strong and wear resistant. Collars with a black-oxide finish have some corrosion resistance, but only in dry environments. Their dark color can be useful for matching other parts in your system. Collars with a zinc-plated finish have an outer layer of zinc that protects the steel from rust and extends the life of the collar. Aluminum collars are lightweight and have good corrosion resistance.
Clamping Two-Piece Shaft Collars
These metal collars are stronger than plastic shaft collars. The two-piece design allows you to install them anywhere on a shaft without removing components or having access to the ends of the shaft. Collars clamp evenly around the shaft to create a strong, mar-free hold. Tighten the clamping screws to secure.
Black-oxide steel collars have some corrosion resistance. Zinc-plated steel and chrome-plated steel collars have moderate corrosion resistance with a bright finish. Aluminum collars are lightweight and have good corrosion resistance. 303 stainless steel collars have excellent corrosion resistance. 316 stainless steel collars have excellent corrosion and chemical resistance.
Clamping Screw | ||||||
|---|---|---|---|---|---|---|
| For Shaft Dia. | OD | Wd. | Type | No. Included | Each | |
Black-Oxide 1026 Carbon Steel | ||||||
| 2 7/8" | 4 1/4" | 7/8" | Socket Head Screw | 2 | 0000000 | 000000 |
Zinc-Plated 1215 Carbon Steel | ||||||
| 2 7/8" | 4 1/4" | 7/8" | Socket Head Screw | 2 | 0000000 | 000000 |
Chrome-Plated 1215 Carbon Steel | ||||||
| 2 7/8" | 4 1/4" | 7/8" | Socket Head Screw | 2 | 00000000 | 00000 |
2024 Aluminum | ||||||
| 2 7/8" | 4 1/4" | 7/8" | Socket Head Screw | 2 | 00000000 | 000000 |
303 Stainless Steel | ||||||
| 2 7/8" | 4 1/4" | 7/8" | Socket Head Screw | 2 | 00000000 | 000000 |
316 Stainless Steel | ||||||
| 2 7/8" | 4 1/4" | 7/8" | Socket Head Screw | 2 | 0000000 | 000000 |
Set Screw Two-Piece Shaft Collars
Tighten the set screw to bite into an unhardened shaft for a secure hold. The two-piece design allows you to install these collars anywhere on a shaft without removing components or having access to the ends of the shaft. Clamping screws provide extra grip.
Carbon steel collars are strong and wear resistant. Their black-oxide finish is somewhat corrosion resistant, but only in dry environments. Their dark color can be useful for matching other parts in your system.
Set Screw | Clamping Screw | |||||||
|---|---|---|---|---|---|---|---|---|
| For Shaft Dia. | OD | Wd. | Type | No. Included | Type | No. Included | Each | |
Black-Oxide 1215 Carbon Steel | ||||||||
| 2 7/8" | 4 1/4" | 7/8" | Hex Socket | 1 | Socket Head Screw | 2 | 0000000 | 000000 |